Take it off, they are junk. Design something that goes through the bumper and drops. Any serious trails those will get ripped off. Heck half of them get torn off on city streets.. Sorry, never have like them on any trailer. Your rear bumper is going to drag, normally on rocks that stick up and hook them. Something removable is better if you can work it. Other than Zuk I have no idea of how to make them better or quieter.